================================================================================
Nomenclature
================================================================================

.. list-table::
	:header-rows: 1
	:align: center
	:widths: auto

	* - Symbols
	  - Definition
	  - Units
	* - :math:`A`
	  - Atom fraction, e.g., Eq. (:ref:`10.3-7<eq-10.3-7>`) or coefficients of the quadratic function of temperature for fuel thermal conductivity, e.g., Eqs. (:ref:`10.3-52<eq-10.3-52>`) and (:ref:`10.3-61<eq-10.3-61>`).
	  -
	* - :math:`a`
	  - Atomic weight
	  -
	* - :math:`B`
	  - Coefficient of the quadratic function of temperature for fuel thermal conductivity, e.g., Eqs. (:ref:`A10.2-1<eq-A10.2-1>`) to (:ref:`A10.2-3<eq-A10.2-3>`)
	  -
	* - :math:`Bu`
	  - Fuel burnup
	  - atom %
	* - :math:`C`
	  - Plutonium alloying coefficient in thermal conductivity Eq. (:ref:`10.3-102<eq-10.3-102>`)
	  -
	* - :math:`C_{\text{p}}`
	  - Specific heat
	  - J/kg-K
	* - :math:`c`
	  - Coefficient of the quadratic term in the simplified enthalpy Eq. (:ref:`10.3-26<eq-10.3-26>`)
	  -
	* - :math:`D`
	  - Value of determinants in Cramer's rule for solving a system of linear algebraic equations
	  -
	* - :math:`f_{\text{o}}`
	  - Heavy-metal mass fissioned expressed as a percentage of U-Pu-Zr alloy post-irradiation mass
	  -
	* - :math:`H`
	  - Enthalpy
	  - J/mol
	* - :math:`h`
	  - Enthalpy
	  - J/kg
	* - :math:`K`
	  - Thermal Conductivity
	  - W/m-K
	* - :math:`K_{\text{pt}1}`
	  - Thermal conductivity of a pore tube containing a fission gas-filled pore
	  - W/m-K
	* - :math:`K_{\text{pt}2}`
	  - Thermal conductivity of a pore tube containing a logged sodium-filled pore
	  - W/m-K
	* - :math:`L`
	  - Length, e.g., Eq. (:ref:`10.3-44<eq-10.3-44>`)
																																																							
		or Lorenz number in Q. (:ref:`10.3-68<eq-10.3-68>`)
	  - m
					
		W-Ω/K\ :sup:`2`
	* - :math:`M`
	  - Mass
	  - kg
	* - :math:`m_{\text{a}}`
	  - One atomic mass unit, :math:`1.6592828 \times 10^{-27}` kg
	  - kg
	* - :math:`N`
	  - Number of atoms, e.g., Eq. (:ref:`10.3-34<eq-10.3-34>`)
																																																							
		or number of fissions, e.g., Eq. (:ref:`10.3-35<eq-10.3-35>`)
																																																							
		or number of pairs of temperature and enthalpy values, e.g., Eq. (:ref:`10.3-37<eq-10.3-37>`)
	  -
	* - :math:`Na`
	  - Avogadro's number, :math:`6.02472 \times 10^{26}` molecules/kg-mole
	  - /kg-mole
	* - :math:`P'`
	  - Porosity fraction relative to the 100%-dense volume
	  -
	* - :math:`P_{\text{c}1}`
	  - Areal fraction of a face of a unit cell that is occupied by a sodium-filled pore, e.g., Eq. (:ref:`10.3-72<eq-10.3-72>`)
	  -
	* - :math:`P_{\text{c}2}`
	  - Areal fraction of a face of a unit cell that is occupied by a sodium-filled pore, e.g., Eq. (:ref:`10.3-72<eq-10.3-72>`)
	  -
	* - :math:`P_{\text{g}}`
	  - Gas-filled porosity fraction relative to the swollen fuel volume
	  -
	* - :math:`P_{\text{I},1}`
	  - Fraction of the side (in heat flow direction) of a unit cell that is occupied by a gas-filled pore
	  -
	* - :math:`P_{\text{I},2}`
	  - Fraction of the side (in heat flow direction) of a unit cell that is occupied by a sodium-filled pore
	  -
	* - :math:`P_{\text{Na}}`
	  - Sodium-filled porosity fraction relative to the swollen fuel volume
	  -
	* - :math:`T`
	  - Temperature
	  - K
	* - :math:`V`
	  - Volume
	  - m\ :sup:`3`
	* - :math:`v`
	  - Characteristic volume of an atom
	  - m\ :sup:`3`
	* - :math:`W`
	  - Weight fraction
	  -
	* - :math:`X_{\text{i}}`
	  - Weight fractions of the 3 database alloys to be mixed to produce the desired fuel composition
	  -
	* - :math:`x`
	  - Zr weight fraction in the U-Zr binary database alloy used in enthalpy region 1 or thermal conductivity region 3
	  -
	* - :math:`Y_{\text{i}}`
	  - Atom fractions of the 3 database alloys to be mixed to produce the desired fuel composition
	  -
	* - :math:`\alpha`
	  - Coefficient of linear thermal expansion
	  - per K
	* - :math:`\Delta L`
	  - Linear thermal expansion from 293K
	  - m
	* - :math:`\rho`
	  - Density, e.g., Eq. (:ref:`10.3-32<eq-10.3-32>`)
																																																							
		or electrical resistivity in Eq. (:ref:`10.3-68<eq-10.3-68>`)
	  - kg/m\ :sup:`3`
					
		Ω-m
	* - :math:`\sigma`
	  - Standard deviation
	  -
	* - Subscripts:
	  -
	  -
	* - :math:`\text{a}`
	  - Desired alloy or desired database alloy
	  -
	* - :math:`\text{c}`
	  - Centigrade temperature scale
	  -
	* - :math:`\text{f}`
	  - Fission, e.g., Eq. (:ref:`10.3-38<eq-10.3-38>`) or solid fission products, e.g., Eq. (:ref:`10.3-40<eq-10.3-40>`) or desired fuel, e.g., Eq. (:ref:`10.3-61<eq-10.3-61>`)
	  -
	* - :math:`\text{g}`
	  - Fission gas
	  -
	* - :math:`\text{h}`
	  - Heavy metals
	  -
	* - :math:`\text{i}`
	  - Index for fuel constituents (I - U, Pu, Zr) or index for the 3 database alloys of a region of interpolation
	  -
	* - :math:`\text{l}`
	  - Liquidus or molten liquid
	  -
	* - :math:`\text{Na}`
	  - Sodium
	  -
	* - :math:`\text{o}`
	  - Fabricated condition, e.g., Eq. (:ref:`10.3-33<eq-10.3-33>`) or 100%-dense unirradiated condition, e.g., Eq. (:ref:`10.3-72<eq-10.3-72>`) or a specified temperature, e.g., Eq. (:ref:`10.3-44<eq-10.3-44>`)
	  -
	* - :math:`\text{p}`
	  - Plutonium
	  -
	* - :math:`\text{s}`
	  - Solidus
	  -
	* - :math:`\text{sfp}`
	  - Solid fission products
	  -
	* - :math:`\text{th}`
	  - Theoretical
	  -
	* - :math:`\text{u}`
	  - Uranium
	  -
	* - :math:`\text{uz}`
	  - U-Zr binary alloy
	  -
	* - :math:`\text{u50}`
	  - U-50 atom % Zr binary alloy
	  -
	* - :math:`\text{z}`
	  - Zirconium
	  -
	* - :math:`\alpha`
	  - Lowest-temperature solid-state phase (α-phase)
	  -
	* - :math:`\gamma`
	  - Highest-temperature solid-state phase (γ-phase)
	  -